Home / 676,280.40-1,013,688.36-439,792.80

Finding the Fourth Proportional to 676,280.40, 1,013,688.36 and 439,792.80

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Solution

The fourth proportional to 676,280.40, 1,013,688.36 and 439,792.80 is: 659,213.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,280.40 : 1,013,688.36 = 439,792.80 : x
  2. Step 2: Convert to fraction form
    676,280.40/1,013,688.36 = 439,792.80/x
  3. Step 3: Cross multiply
    676,280.40x = 1,013,688.36 × 439,792.80
  4. Step 4: Simplify right side
    676,280.40x = 445,812,842,171.81
  5. Step 5: Solve for x
    x = 445,812,842,171.81/676,280.40
  6. Step 6: Final answer
    x = 659,213.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.